Elastic Elasticsearch up to 8.19.18/9.3.7/9.4.3 Simulate Pipeline API resource consumption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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2.6$0-$5k0.52+

Summaryinfo

A vulnerability categorized as problematic has been discovered in Elastic Elasticsearch up to 8.19.18/9.3.7/9.4.3. Affected is an unknown function of the component Simulate Pipeline API. Such manipulation leads to resource consumption. This vulnerability is traded as CVE-2026-72683. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Elastic Elasticsearch up to 8.19.18/9.3.7/9.4.3 and classified as problematic. Affected by this issue is an unknown functionality of the component Simulate Pipeline API. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. CVE summarizes:

A flaw in Elasticsearch allows an authenticated user with the privileges required to invoke the simulate pipeline API endpoint (https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-ingest-simulate) to submit a request that causes a self-referential data structure to be created. When a specific internal component later processes that structure, the operation recurses without bound and raises a fatal error that is not handled by the surrounding execution path, terminating the affected node process and resulting in a denial of service.

The advisory is available at discuss.elastic.co. This vulnerability is handled as CVE-2026-72683 since 08/10/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are needed for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 8.19.19, 9.3.8 or 9.4.4 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.7
VulDB Meta Temp Score: 2.6

VulDB Base Score: 2.7
VulDB Temp Score: 2.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Elasticsearch 8.19.19/9.3.8/9.4.4

Timelineinfo

08/10/2026 CVE reserved
08/13/2026 +3 days Advisory disclosed
08/13/2026 +0 days VulDB entry created
08/13/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: discuss.elastic.co
Status: Confirmed

CVE: CVE-2026-72683 (🔒)
GCVE (CVE): GCVE-0-2026-72683
GCVE (VulDB): GCVE-100-389894

Entryinfo

Created: 08/13/2026 23:15
Changes: 08/13/2026 23:15 (54)
Complete: 🔍
Cache ID: 216::103

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